Type-writer ribbon-movement.



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L PATBNTED JUNE '1, 1904. y1.11.1:11111111BRl y vTIPEWRITER RIBBON MOVEMENT.

ArPmoA'rIon FILED nso. 29, 1902.

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INVENTOH 1 Manzana/er ATTORNEY i No. 761,638. PATENTEDJUNE?, 1904.

` J. ALEXANDER.

TYPE WRITER .RIBBONMOVEMENT APPLIQATION FILED Mio. 29, 19'02.

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- ATTORNEY 'ma t.

M. ,runs nx man mama .iEssE ALEXANDER, "'oE BRooKLYN, NEW YoRK,AssIGNoR oE'oNEiiALE To BERNARD eRoNsou,'iREUBEN 'g 4 oENEw ,roRK, N. Y.

sPEIErcATIoN forming part of Letter Patent No. veils'sffasted .mae 7. 1904./

f Appunti@ nea December 29,1902. serial N6. 137,043. ,m9 @cada Tov all vwhom it may concern.:

Beit known that I, JESSE ALEXANDER, a citizen of the United States, residing at Brooklyn, Kings county, NewYork, have invented 5 certain new and useful Improvements in Type- Writer Ribbon-Movements, of which the following is a full, clear, and exact description.-

My invention relates to 'improvementsin type-writers, and particularly to mechanism ro for effecting the feed of the ribbon bymeans of which .the printing-ink is applied.

The object of this invention is the construe tion of a mechanism by means of which the ribbon may be fed from side to side of the r 5 machine and reversed readily by a single movement by hand when desired. 4The opo eration of the feeding is'made positive. Acon-y struction isalso provided by means of which v'theribbon is 'withdrawn from the-printing zol'position immediately after the printing of a @type andvremains withdrawn at all times, ex-

ycept when a type is at the printing position.

A "The invention consists in providing a systelnrof irateh'ets. and pawls which are operated ,2S by nleans of the type-bar movement for feedingV the ribbon and another set'A of pawls for preventing the backward movement of the u' ribbon-moving ratohets'. Both sets of pawls are controlled by means of a manually-oper- 30 able reversing-rod, which is accessible on both sides of the machine and which may beadjustedby a simple touch of the hand. I The guiding of the ribbon to the printing position is controlled by pivoted guides,wh`ichmove 35 toward and away from the platen vat the 'instant of printing. 'v

\ The construction will be more readily understood from the following specification and Figure lis a 'frontelevation of tho'se'parts of atype'' \vr'iter embodying the improvements of this invention; Fig. 2 is aside elevation of the same, together with a type and key` 45 bar construction for operating it.- Fig. 3 is a fragmentary horlzontal sectional vlew and lTYPFJWHiTI-:yla RIBBON-Nidi)EMIRHHL"Y V plan of the left-hand" Patented June 7, 1904.'.

PATENT Ome" ,oRoNsorL AND soLoMoN; in siEGEL, y

I ribbon-movinigfra and its corresponding operating and"hold g pawls with the rod for reversing the Sarria-:i`

type-bar 8 Ais operated by means of the'key- Abar 9 and intermediate link v"10, as shown in 11- is a spring which isattached to the arm 60 `12 and holds the universal bar, shaft, yand other attached parts in their normal position.

13 and 14 are the left and right handribbonoperating shafts, respectively, through the medium of which the ribbon 15 is movedinf65 one direction or thel other. 16- and-17' are 'the ratehets carried by these ribbon-shafts 13 and'14. 1 y

18and 19 are substantially'vertical armscarried by the universal shaft 1 and pivoted at,70 their upper ends to the pawl-bars 20'an'd 21. vThese pawl-bars are provided with-- suitable pawls 22 and 22. The'operation of'the universal bar and universal rock-shaft by means of the type-bar mechanism will therefore cause 7 5 the pawl-bars tobe movedlforward and backward correspondingly. 4On the rearward, `movement the pawl 22.will slip freely overl the teeth of the ratchet 16, andon thefor-ward .g movement if the pawl-bar is in its lowestgpq-g SO sition it will rotate the ratchet in the direction :j

of the arrow in Fig. 3 anticlockwise. To con;` trol the operation ofthese pawls,.1-have1pro-' vided the reversing-rod 23,which is supp at the two opposide sides of,- tlie machin brackets 24 and 25.` r1`his rod has at the the oppositely positioned cams 25 an 'hen the rod 23-isin positionsho) drawings, the 1),1l.\v.l,.22 vmay,engageftl of the ratchet 156 andatfthesametimefth 26 at 'th-e right-hand? end of the. machine such a position asfto hold the pawl-b 1 is auniversal'rock-shaft pwote'dfinthe O y ,3,0 tocause the ribbon to be wound upon the rightof engagement with its ratchet 17. i The movement of the universal har at such a time, although it causes both pawl-bars` to mbve backward and forward, only operates the lefthand ratchet 16.

'l-o prevent the operating-ratchet from hav- 'ing any tendency to rearward movement when the'pawl which is operating it is moving over Io the teeth of the ratchet,I have provided the pivotedpawls 27 and 28. In the position shown 1n the drawings the pawl 27 is in engagement with the teeth of the left-hand ratchet 16, so.r

that the said ratchet may be rotated anticlockwise and cannot move backward. At this time the holding-paw] 28 is held inthe raised position, as shown in the right hand of Fig. 1, by means of the end of the pawl-bar 21, which is itself raised by .means ot' the cam 26. When the parts are in position shown, it will be noted that the pawl-bar 20 may be raised' and fall as the pawl-22 slips over the teeth of the rachet moved backward and forward.

To reverse the movement of the ribbon and hand spool, it is simply necessary to push the reversing-rod 23 to the right, so that the pa'wlbar 20 will be raised by the cam 25 and the pawl-bar 21 will belet down by the cam 26,so as to allow the pawl-bar. 22f to engage the rtachet 17. At the same time the holding-pawl 27 is raised by the movement of the pawl-,bar 20 and the holding-paw] 28 at the right is allowed to drop by the pawl-bar 21.

1t will be noted that all of the reversing and holding parts of the mechanism are carried by the two side brackets 24 and 25`,`so that theyfmay be readily removed from themachine. y

At the printing position the ribbon is guided by means of the fingers 29 and 30, which ,are carried by the guide-block 31. This block is pivotally supported by the pins 32 and 33,

carried by the type-bar plate 7. This blockv31 also carries the alining devices 35 and 36, by means of which the type is guided to its proper printing position.

37 is a projection carried by the universal bar 6, which is connected to the guide-block 31 by means-ot' the link 38; It will be seen that the movement of the universal bar is transmitted to the block 31 and' the alining devices and ribbon-guides 29 and 30. W hen the type-bar ismoved upward, the universal bar is moved to the rear, and thus raises thev ribbon 15 upward to the printing position in front of the platen. -l'Vhen the type-bar is released, the spring 11 throws the parts back into position, (shown in Fig. 2,) so that the printed character is instantly seen by the operator.

The alining mechanism is described and claimed in detail in an accompanying application.

It will be seen that by this simple construc- 'but few parts, it is economical and not likely to become easily d'isarranged. By combining the alining devices 35 and 36 and the ribbonguides 29 and 30 into a composite structure which is operated'l'iy the same movement the printed matter about the platen is made more readilyv accessible for reading or purposes et' erasures and the like, and these parts are also but little likely to become disnrran'ged. The advantages will be apparent.

What I claim is- 1. A ribbon-moving mechanism for typewriters includinganniversal rock-shaft, horizontal pawl-bars operated thereby and having horizontal axes, ribbon-moving ratchcts adapted to be operated by said pnwl bars, holding-pawls for said ratchets having horizontal pivots, and a reversing-rod for effecting the raising and lowering of the pawl-bars and corresponding holding-pawls.

2'. A ribbon-feeding mechanism including a 'universal rock-shaft, a substantially vertical arm carried thereby, a spring for holding it in its normal position, a substantially boris zontal pawl-bar connected to said arm, a horizontally-positioned ribbon -moving ratchet adapted to be moved by said pawl-bar, aholding-pawl adapted to coact with said ratchet the end of said pawl-bar extendingund'erneath a part of said holding-paw] and a cam for lifting or lowering said paivl-bar whereby when said pawl-bar is raised by said cam said holding-paw] is raised and when said pawl-bar is released from said cam said holding-pawl contacts with said ratchet.

3. A ribbon-moving mechanism for a type;vl writer including a universal rock-shaft, substantially vertical arms carried thereby at opposite ends thereof, a spring for holding said universal shaft in its normal position, substantially horizontal pawl-bars connected to said arms, horizontally -positioned crownratchets for moving` the ribbon, a holdingpawl for each ratchet, a reversing-rod, cams carried by said reversing-rod, said parts being so positioned that when one pawl-bar is raised by one of said earns its corresponding holding-paw] will be raised and the other pawlbar with its corresponding holding-pawl will be in operative engagement with its ratchet.

4. A ribbon-moving mechanism for a typewriter including a universal bar, horizontal pawl-bars operated thereby, ribbon-moving ratchets adapted to be operated by said pawlbars, holding-pawls for each of said r\atchets,

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massa lrei'ersing-lcani's forcontrolling the position of ,Sfaid` p'awl-bars, 'and said\holding-pawls'where: ,by-tlie'llifting of' one pawl-bar will withdraw the low.-l lering of saidpaw'l-barwi'll permit the hold- .itscorresp'onding holding-pawl and ,ifi'eelianisni'comprising lthe combination `of a" ,pai fof vertical ribbon-movingshafts, crown.-

'ratclie'ts' carried by said shafts, 'ai universal r bar, a pair of pawl-barsoperated thereby resting above and adapted-,to operate said'ratchets,- reversing-cams standigjbeneath said A`otally mounted thereon, ribbonguides car-- pawl-bar's for lifting and allowing them to1 be lowered, -a type-bar plate, a guide-block pivried by said block, key and type bar mechanism and means whereby when the'type-bar is operated the guide-block and ribbon-guides will be moved backward into printing posi` tion and when the type-bar is released the guide will drop forward.

6. 'In a type-writer, the ribbon-operating .mechanism comprising the combination of a pair of' vertical ribbon-moving shafts, c rownvratehets .carried by said shafts,'a universal bar, a pair of pawl-bars ope rated thereby resting above and adaptedto'operate said ratchets, a type-bar. plate, a guide-block pivotally mounted thereon, ribbonguides carried by said block, key and-type bar mechanism and means whereby when thc type-'bar is operated -the gu'ideblock and ribbonguides will be,

moved backward into printing position and when the type-bar is released the guides will drop `forward. 7. A ribbon-operating type-writer including a universal' bar, a pivot'ally mounted guide block, ribbon guides carried by said block, a projection froiusaid universal bar, a link connecting said projection with said guide-block, a spring for holding'sad parts in their normal position Awhereby when saidvuniversal bar isl operated said 'ribbon-guides are thrown backward and., when said universal bar is released the spring will operate to move said guides forward and downward for the purpose spccilied.

8.l A type-W riter ribbon-operating mechanism including a vertically-inounted type-bar plate, a universal bar mounted at the rear thereof.and adapted to'be operated by the type-bar mechanism, a pivoted block having a guide for the ribbon and a link pivoted to saidblock and'pivoted to said universal bar at the reartliereof for the purpose specified.

'9.' A type-writer construction including a pivotally mounted guide block, alining devices carried by said block, ribbon-guides carried by said block, mechanism for operating said guide-block toward and away from the printing position, including a universal bai,

a link pivoted 'to the said bar and pivotally connected to said guide-block, and a spring for coacting 'with said mechanism for normechanism for al mally holding` said guide-block away from the printing position.

y10. V Agtype-writer construction including a type-barlplate, a universal bar mounted at the v-rear thereof, a springffor` holding .it in 4.its normal position, a pivotally-mo'unted guideblock, a'l-ining-posts carried. by said guideblock, ribbon guides carried' by, said block and positive connection"between-*said guideid universal barandlkey and ty pe bar mechanism whereby the operation of the type-barii'pon the universal bar will cause the guide-block and alinng and ribbon-guide con-l struction to move upward and backward and the release of the type-bar will cause the said guide block to move forward and downwardly..

11. A type-writer*constructionincluding a type-bar plate, a universal bar mounted at the rear thereof, a spring for holding it in its normal position,a pivotally-mounted guide-block, adjustable alining-posts carried by said block, ribbon-guides carried by said block and positive connection between said guide-block and said universal bar and key and type bar mechanism whereby the operation of the type-bar upon the universal bar will. cause the guide-v hlock and alining and ribbon-guideconstruction toniove upward and backward andthe release of the type-bar will cause the said wardl y, whereby the type-bar may be yguided to the printing position and the alihing and guiding device retracted.

i12. Arihbon-operating mechanism comprising vertical ribbon-moving shafts, ratchets carried thereby, a vertically-positioned typebar plate, a universal bai' mounted at the rear thereof, key and type barconstruction, substantially vertical arms operated by said universal bar, pawl-bars connected to said arms, pawls carried by said bars for Aengagement with the teeth ot' said ratchets, holding-pawls for said ratchets, reversing-cams, the said pawl-bars standing underneath said holdingguide-bloclrm move forward andv dQwn- IOO pawls, a pivotally-.mounted guide-block, p

means connected to said universal bar for operating the same, and ribbon-guides carried by said block. l v

13. Aribbon-operatingmechanismcomprising vertical ribbon-moving shafts, ratchets.

carried thereby, a vertically-positioned typebar plate, a universal bar mounted at the rear thereof. key and typebar construction, substantially vertical arms operated by said universal bar, pawl-bars connected to said arms, pawls carried by said bars for engagement with; the teeth of said i'atcliets, a pivotally mounted vguide-block, means connected to said universal bar for operating the same, and ribbon-guides carried bysaid block.

14. A ribbon-movingmechanism including a universal bar, ril )bon-moving ratchets, pawls having horizontal axes operated by said universal bar, holding-pawls Jfor said ratchets, a

reversing-shaft, cams carried thereby, supporting-posts forming bearings and supports for said shaft and Asaid holding-pawls.

15. A ribbon-moving mechanism including eluniversal bar, vertically-rnounted ribbonmoving shafts, ratchets carried by said shafts, pawl'- bas operated by said universal bar,

l l' ."pawls carried v said .ratchets, holding-pawls for said ratchets,

moving shafts,

thereb'y for engagement with a universal bar, vertically-mounted ribbon.-

l'atchets carried by said shafts,-

paWl-bars operated by said universal bar;

pawls carried thereby for engagement with n said ratchets, holding-pawls for said ratchets. a reversing-shaft, cams carried by said shaft for engaging and lifting said pawl-bnrs, supporting-posts forming bearings for said shaft and carrying the said lxolding-pawls, a type- 'bar plate, a guide-block pivotal-ly mounted thereon, ribbon-guides carried by said block and means for operating said guide, substantially as described.

JESSE ALEXANDER.

Witnesses:

L. VREELAND, R. S. ALLYN. 

